Centrifugal filter.



PATENTED SEPT. 17, 190'?.

No.v 366,424. l

Y kH. W. BLAISDELL.

GBNTRIPUGAL FILTER. APPLICATION FILED MAY 17, 1905.

' s SHEETS-SHEET 1v.

5565 I L I n' No. 863,424. PATENTED SEPT. l?, 1907.

H. W. BLAISDELL.

-GENTRIFUGA'L FILTER. APPLIOATION T'ILBD Mnl?. 1905.

3 SHEETS-SHEETA 2.

HIRAM W. BLAISDELL, OF LOS ANGELES, CALIFORNIA.

CENTRIFUGAL FILTER.

specifi cationof Letters Patent.

Patented Sept. 17, 1907.

Application filed May 17,1905. Serial No. 260.894.

r `To-all whom it may concern:

f-Be it known that I, Hiram W. BLAISDELL, a citizen Aof the' United States, residing at Los Angeles, in the county of Los Angeles and State oi California, have invented certain newand useful Improvements in vCentrifugal Filters; and I do hereby declare the following to be a full, clean-'and exact description or' the invention, such as will enable others skilled in the art to which it appertains t'o make and use the same.

This invention relates to centrilgal filters, and has yfor its object to provide an apparatus that shall be capable of economical and continuous operation without the necessity of stoppage to replenish it with the substance under `treatment or for the purpose of disyl5 charging either the filtrate or residuum.

It is also an object of this invention to effect the separation of water from sand and slimes as they come from a, crushing apparat-us,` thereby delivering said sand iand slinies in a well-mixed condition for subse `quent treatment by cyanid or other process for the extraction ofthe precious metals.

Another' object of the invention is to provide a ma chine in which the filter bed may be formed wholly or `in part of the substance which it isdcSiI-ed to filter,

These, and other, objects are attained by means of the mechanism described in the following specification and illustrated in the accompanying drawings, in which Figure 1 is a perspective, general view of my apparatus; Fig. 2 is a longitudinal section through. the rotating parts and the case surrounding them, Fig. 3 is a detail of the bearing of one oi the rotating disks; Fig. 4 is an alternative construction of the cushion to receive the impact of the materia-l as it passes to the 35 filter bed; Fig. 5 is a'sectional view of a portion of the tiltering surface, showing an alternative construction;

Fig. 6 is an end view of the case, partly broken away,

shQw-ing the means for removing the residuum` therefrom; Fig. 7v is a perspective detail of a portion o1' the belt shown in Fig. 6.

Referring to Fig. 1, the character l designates the sillsof the apparatus, upon which are mounted uprights 2, carrying cross pieces 3, which support bearings 4, in which rotates shaft 5, held from longitudinal motion ,by collars 6, set-screwed thereon, and rotatably and sldably mounted on shaft 5 is a sleeve 7, having a pulley 8, which may be driven from a countershait, not shown. l

e On one end of the sleeve 7 is a iiange 9, to which may be riveted a plate 10, around the edge oi which may be v riveted an angle bar 11, Figs. 1 and 2, to which is fixed v a perforated ring l2. On the opposite side of the ring l2, from plate 10, is a drum 13, having an angle piece lf-l,

on its opposite end and reinforcing rings 15, in the middle. Bolted to angle 14 is a cover plate 16, which carries the channel ring 17. The drum 13 is perforated and ispre'terably lined with a layer of fibrous material 18, and oneotcanvas or similar fabric 19, the latter being h'elddown by narrow strips oi'iron orother `metal 20, spaced equidistantly'around the inner druni 13, and held in place by bolts 21. i

Shaft 5 has a pulley 22, Fig. l, adapted to be driven from the same counter-shaft as pulley'S, 'but' at a lower speed. Rigidly mounted on shaft 5 andI within the drum 13, is a spider 23, having sockets 24, into which are keyed the projections 25,` of the disk supporters 2G, preferably provided with a cavity `tor the purpose of holding lubricating substances, which have bearings 27, provided with anti-friction thrust devices 2S, on which are mounted disks 29, which may be concavoconvex in form. l

Projection 2,5 may be provided with collarsor washers 30 by means of whichthe' disk 29 may be adjusted to any desired distance from the surface oi the filtering fabric 19. Sockets 24 are in three different vertical planes. On one side of spider 23 is bolted a bowl 3l, provided with outlet tubes 32, these being omitted where they come opposite to the bearings of any of the disks. I

A `pipe 33 is arranged to deliver the material to be iiltered into the bowl 3l, Figs. l and 2.

The sleeve 7 has at one end a groove 34, Fig. 2, adap ed to receive block 35 in the center of the lever 36, one

end oi which .lever is pivoted to one oi the channel bars 37, and the other end, connect-ed by means ofa pitman 38, to a crank disk 39, having teeth on its periphery adapted to be engaged by a worm 'lO, mounted on the shalt 41, which is supported in bearing 42, and` carries a pulley 43, around which and the shaft 5, passes the belt 44. By these means, a reciprocating motion may be communicated to the sleeve. v

The drum 13 may be provided with a case 45, with an outlet 46, and sampling vanes 47 and sampling spouts 4S, underneath which is a trough 49 with openingscoxninunicating with the lower part of case 45. That portion of the case surrounding the ring '12 may have mounted in it channel bars 50, Figs. 2, 6 and 7 in which travel rollers 5I, supporting an endless belt 52, which travels .over sprocket wheels 53 and 54, mount-ed in bearings in said case, in the direction indicated in Fig. 6.

Sprocket 53 is mounted on shaft 55, which carries a pulley 5G, which.` may be driven from any suitable source of power. Mounted belowsprocket 53 is a rotary brush 57, mounted on shaft 58, and driven in the direction indicated in Fig. 6,- by any suitable means. The portion 415L of the casing has an opening 59 in its lower part, beneath which may travel an endless conveyer belt or similar' apparatus 60.

Referring to Fig. 4, there is shown a construction which may be substituted for the channeled ring 17.

lt, consists of a ringer' metal 6l, to which is affixed by method of holding the fiber lining and the filtering fnbrickin-place. This consists of a wire 63, which may pass through holes lin the-drum 13, an(LtllroughmtheY fabric, at'ter the manner of sewing.

The method of operation of this apparatus is as ollow The machine being in rotation, the material to ,I be filtered, which may consist of the sand and slilnes,

before mentioned, the pulp from beet sugar manufacl ture or similar product, is led to the machine through the pipe 33 and empties into the bowl 31, Iand is driven by centrifugal force through the tubes or orifices 32 therein to the cushion formed on the channel ring 1T, and Wiers over the inner flange thereof on to the filter bed and is distributed and moved in the direction indicated by the arrow in Fig. 2, by being brought against the-disks 29. through the slower rotation of the spider 25, said disks being inclined to the axis oi' shaft 5 as indic-ated` A predetermined portion, however, of the material, as indicated bythe dotted line in Fig. 2, may

I be left undisturbed to form a filter bed, The reciprocating motion oi the drum 13 and its appurtenances causes the disks 29 to cut the iilter bed down to a level surface as indicated. The liquid portion of the material is driven by the centrifugal action through lthe iilter bed, the canvas fabric and the fibrous material, and escapes through the perlorations in drum 13 to the inside or' 'the case 45, and escapes therefrom by the pipe 46, whence it may be conveyed to any desired place. The residuum isthrown by kthe last pair of disks on to the ring l2 and falls through the apertures therein on to the endless belt 53, which discharges it through the opening 59 of the case 45S on to'the belt 60 vivhich cony'eys it to any pre ried Ylestination.

' Referring to Fighen it is desired to clean Vthe filter or repairor ad] st any portion of it, within the drum 13,V the bolts holding the ring 16 may be taken out and the ring 16 and the channel 17 may be removed through the opening in the case 45, givingfree access to the intel'ior of the filter.

Claims 1. A centrifugal iilter-haivingia hollow member, an inner member for distributing and removing material and means for giving the hollow member i1 reciprocating motion in relation to the inner member.

2.' A centrifugal filter having a hollow member, an inner ,member carrying disks for distributing and removing material and means for giving the hollow member a reciprocating motion in relation to the inner member.

5l. AA centrifugal filter having an inner member, and disk holders helically Aarranged on said inner member around the axis thereof. l

4. -In a centrifugal filter, a disk-carrying inner member and means for radially adjusting said disks and means for giving s'nid inner member a reciprocating motion.

In testimony,wliereo l nave signed my name to this specification. in the presence of tivo subscribing Witnesses nt Los Angeles. this 22nd day of April, IDQS.

HIRAM W. BLAISDELL;

Witnesses Mmxox Fono, HARRY A; Bnooxs. 

